Diego Costa had to be taken off in the 52nd minute on Thursdays match against Sporting CP.

After undergoing medical exams this Friday, April 13, he has been diagnosed with a hamstring injury to his left leg.

Costa has only scored three times in La Liga since returning to Atletico (Picture: Getty)

Atletico have not provided a return date, though he is unlikely to have recovered for the trip to north London on Thursday, April 26.

Costa had taken part in the last 10 La Liga matches for Atletico, and started both Europa League quarter-final legs, and appeared to be getting back to peak fitness after six months out of the game while he waited to move to Madrid from Chelsea.